Strange message for intertrac without link

[Jun Omae]

​http://trac.edgewall.org/demo-0.12/intertrac/r0 says the following.

Can't view r0: privileges are required to perform this operation

In this site, trac:r0 says…

Can't view r0: privileges are required to perform this operation. You don't have the required permissions.

That is wrong use of PermissionError at tags/trac-0.12.5/trac/wiki/intertrac.py@:56#L45​. The message should be specified with msg keyword argument.

trac/wiki/intertrac.py

@@ -53 +53 @@
         if isinstance(link_frag, (Element, Fragment)):
             elt = find_element(link_frag, 'href')
             if elt is None: # most probably no permissions to view
-                raise PermissionError(_("Can't view %(link)s:", link=link))
+                raise PermissionError(msg=_("Can't view %(link)s:", link=link))
             href = elt.attrib.get('href')
         else:
             href = req.href(link.rstrip(':'))